## Snakes on a Payload
## Copyright (C) 2011 CORE Security Technologies
##
## This program is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License
## as published by the Free Software Foundation; either version 2
## of the License, or (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
##
## Authors:
## 2011/09/11 - Pedro Varangot (pvarangot@)
## 2011/09/11 - Fernando Russ (fruss@)

import struct
import os
import sys
import imp
from toolchain import EnvToolchain
from libs import JsonLibStore


class Arch(object): 
    ARCHS = {}

    def __init__(self):
        self.toolchain = EnvToolchain(self)
        self.libs = JsonLibStore(self)
    
        
    @staticmethod
    def register( klass ):
        Arch.ARCHS[klass.NAME] = klass
        return klass

    @staticmethod
    def byName( archname ):        
        path = os.path.dirname(__file__)
        if not path in sys.path:
            sys.path.append( path )
        try:
            __import__(archname)        
            k = Arch.ARCHS.get(archname, None)
        except ImportError:
            k = None
            
        if k == None:
            raise Exception("Unknown architecture '%s'" % archname)
        return k()

    @staticmethod
    def valids():
        return Arch.ARCHS.keys()
            
        
